Last year, the open ports were added by a team update in the Player Stations section of the ARENA manual (which seemed odd to me). I've quoted the section below.
Quote:
Once plugged in to the Field Management System via the Ethernet cable provided, the ports that the teams will be able to access on the playing field are as follows:
– TCP 1180: This port is typically used for camera data from the cRIO to the DS when the camera is connected to port 2 on the cRIO. This port is bidirectional on the field.
– UDP 1130: Dashboard-to-Robot control data, directional
– UDP 1140: Robot-to-Dashboard status data, directional
– HTTP 80: Camera connected via switch on the robot, bidirectional
– HTTP 443: Camera connected via switch on the robot, bidirectional
All these ports are open on the playing field, so a team can use them as they wish if they do not employ them as outlined above (i.e. TCP 1180 can be used to pass data back and forth between the robot and the DS if the team chooses not to use the camera on port 2).
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I have not seen a similar list this year. In addition to the above list, there was a rule that listed the same restrictions at this year's [R53].
If you want to use dashboard to robot communication, I suggest asking which ports are open in Q/A.